[prev] 123 [next]

Graph Data Models

RDF  =  Resource Description Framework
  • directed, labelled graphs
  • nodes have identifiers  (constant values, incl. URIs)
  • edges are labelled with the relationship
  • can have multiple edges between nodes  (diff. labels)
  • can store multiple graphs in one database
  • datatypes based on W3C XML Schema datatypes
Data as triples, e.g. <Person1,given,"John">,   <Person1,parent,Person3>

RDF is a W3C standard;  supported in many prog. languages